The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

H Farajollahi - One of the best experts on this subject based on the ideXlab platform.

  • universe acceleration and fine structure Constant variation in bsbm theory
    Journal of Cosmology and Astroparticle Physics, 2012
    Co-Authors: H Farajollahi, Amin Salehi
    Abstract:

    In this work we investigate the utility of using SNe Ia observations in constraining the cosmological parameters in BSBM theory where a scalar field is responsible for both fine structure Constant variation and late time universe acceleration. The model is discussed in the presence of an exponential self potential for the scalar field. Stability and phase space analysis of the solutions are studied. The model is tested against observational data for Hubble parameter and quasar absorption spectra. With the best fitted model parameters, the theory predicts a good match with the experimental results and exhibits fine structure Constant variation. The analysis also predicts the recent universe acceleration and possible phantom crossing in future.

  • universe acceleration and fine structure Constant variation in bsbm theory
    arXiv: General Relativity and Quantum Cosmology, 2012
    Co-Authors: H Farajollahi, Amin Salehi
    Abstract:

    In this work we investigate the utility of using SNe Ia observations in constraining the cosmological parameters in BSBM theory where a scalar field is responsible for both fine structure Constant variation and late time universe acceleration. The model is discussed in the presence of an exponential self potential for the scalar field. Stability and phase space analysis of the solutions are studied. The model is tested against observational data for Hubble parameter and quasar absorption spectra. With the best fitted model parameters, the theory predicts a good match with the experimental results and exhibits fine structure Constant variation. The analysis also shows that for the equation of state parameter, recent universe acceleration and possible phantom crossing in future is forecasted.

Amin Salehi - One of the best experts on this subject based on the ideXlab platform.

  • universe acceleration and fine structure Constant variation in bsbm theory
    Journal of Cosmology and Astroparticle Physics, 2012
    Co-Authors: H Farajollahi, Amin Salehi
    Abstract:

    In this work we investigate the utility of using SNe Ia observations in constraining the cosmological parameters in BSBM theory where a scalar field is responsible for both fine structure Constant variation and late time universe acceleration. The model is discussed in the presence of an exponential self potential for the scalar field. Stability and phase space analysis of the solutions are studied. The model is tested against observational data for Hubble parameter and quasar absorption spectra. With the best fitted model parameters, the theory predicts a good match with the experimental results and exhibits fine structure Constant variation. The analysis also predicts the recent universe acceleration and possible phantom crossing in future.

  • universe acceleration and fine structure Constant variation in bsbm theory
    arXiv: General Relativity and Quantum Cosmology, 2012
    Co-Authors: H Farajollahi, Amin Salehi
    Abstract:

    In this work we investigate the utility of using SNe Ia observations in constraining the cosmological parameters in BSBM theory where a scalar field is responsible for both fine structure Constant variation and late time universe acceleration. The model is discussed in the presence of an exponential self potential for the scalar field. Stability and phase space analysis of the solutions are studied. The model is tested against observational data for Hubble parameter and quasar absorption spectra. With the best fitted model parameters, the theory predicts a good match with the experimental results and exhibits fine structure Constant variation. The analysis also shows that for the equation of state parameter, recent universe acceleration and possible phantom crossing in future is forecasted.

Michael Sherbon - One of the best experts on this subject based on the ideXlab platform.

  • Golden Ratio Geometry and the Fine-Structure Constant
    Journal of Advances in Physics, 2019
    Co-Authors: Michael Sherbon
    Abstract:

    The golden ratio is found to be related to the Fine-Structure Constant, which determines the strength of the electromagnetic interaction. The golden ratio and classical harmonic proportions with quartic equations give an approximate value for the inverse Fine-Structure Constant the same as that discovered previously in the geometry of the hydrogen atom. With the former golden ratio results, relationships are also shown between the four fundamental forces of nature: electromagnetism, the weak force, the strong force and the force of gravitation.

  • Fine-Structure Constant from Sommerfeld to Feynman
    Journal of Advances in Physics, 2019
    Co-Authors: Michael Sherbon
    Abstract:

    The Fine-Structure Constant, which determines the strength of the electromagnetic interaction, is briefly reviewed beginning with its introduction by Arnold Sommerfeld and also includes the interest of Wolfgang Pauli, Paul Dirac, Richard Feynman and others. Sommerfeld was very much a Pythagorean and sometimes compared to Johannes Kepler. The archetypal Pythagorean triangle has long been known as a hiding place for the golden ratio. More recently, the quartic polynomial has also been found as a hiding place for the golden ratio. The Kepler triangle, with its golden ratio proportions, is also a Pythagorean triangle. Combining classical harmonic proportions derived from Kepler's triangle with quartic equations determine an approximate value for the Fine-Structure Constant that is the same as that found in our previous work with the golden ratio geometry of the hydrogen atom. These results make further progress toward an understanding of the golden ratio as the basis for the Fine-Structure Constant.

  • Physical Mathematics and the Fine-Structure Constant
    Journal of Advances in Physics, 2018
    Co-Authors: Michael Sherbon
    Abstract:

    Research into ancient physical structures, some having been known as the seven wonders of the ancient world, inspired new developments in the early history of mathematics. At the other end of this spectrum of inquiry the research is concerned with the minimum of observations from physical data as exemplified by Eddington's Principle. Current discussions of the interplay between physics and mathematics revive some of this early history of mathematics and offer insight into the Fine-Structure Constant. Arthur Eddington's work leads to a new calculation of the inverse Fine-Structure Constant giving the same approximate value as ancient geometry combined with the golden ratio structure of the hydrogen atom. The hyperbolic function suggested by Alfred Landé leads to another result, involving the Laplace limit of Kepler's equation, with the same approximate value and related to the aforementioned results. The accuracy of these results are consistent with the standard reference. Relationships between the four fundamental coupling Constants are also found.

  • Quintessential Nature of the Fine-Structure Constant
    Global Journal of Science Frontier Research: A Physics and Space Science, 2015
    Co-Authors: Michael Sherbon
    Abstract:

    An introduction is given to the geometry and harmonics of the Golden Apex in the Great Pyramid, with the metaphysical and mathematical determination of the Fine-Structure Constant of electromagnetic interactions. Newton's gravitational Constant is also presented in harmonic form and other fundamental physical Constants are then found related to the quintessential geometry of the Golden Apex in the Great Pyramid.

  • Fundamental Nature of the Fine-Structure Constant
    International Journal of Physical Research, 2014
    Co-Authors: Michael Sherbon
    Abstract:

    Arnold Sommerfeld introduced the Fine-Structure Constant that determines the strength of the electromagnetic interaction. Following Sommerfeld, Wolfgang Pauli left several clues to calculating the Fine-Structure Constant with his research on Johannes Kepler's view of nature and Pythagorean geometry. The Laplace limit of Kepler's equation in classical mechanics, the Bohr-Sommerfeld model of the hydrogen atom and Julian Schwinger's research enable a calculation of the electron magnetic moment anomaly. Considerations of fundamental lengths such as the charge radius of the proton and mass ratios suggest some further foundational interpretations of quantum electrodynamics.

Michael E. Tobar - One of the best experts on this subject based on the ideXlab platform.

  • Global representation of the fine structure Constant and its variation
    Metrologia, 2005
    Co-Authors: Michael E. Tobar
    Abstract:

    The fine structure Constant, α, is shown to be proportional to the ratio of the quanta of electric and magnetic force associated with the electron. This provides a new representation, which is global across all unit systems. Consequently, a variation in α was shown to occur due to a differential change in the fraction of the quanta of electric and magnetic force, while a variation in c was shown to manifest due to the common mode change. The representation is discussed with respect to the running of the fine structure Constant at high energies (small distances), and a putative temporal drift. It is shown that the running of the fine structure Constant is due to equal components of electric screening (polarization of vacuum) and magnetic anti-screening (magnetization of vacuum), which cause the perceived quantum of electric charge to increase at small distances, while the magnetic flux quantum decreases. This introduces the concept of the 'bare magnetic flux quanta' as well as the 'bare electric charge'. With regard to temporal drift, it is confirmed that it is impossible to determine which fundamental Constant is varying if α varies.

Asantha Cooray - One of the best experts on this subject based on the ideXlab platform.

  • constraints on spatial variations in the fine structure Constant from planck
    The Astrophysical Journal, 2014
    Co-Authors: Jon Obryan, Joseph Smidt, Francesco De Bernardis, Asantha Cooray
    Abstract:

    We use the cosmic microwave background (CMB) anisotropy data from Planck to constrain the spatial fluctuations of the Fine-Structure Constant α at a redshift of 1100. We use a quadratic estimator to measure the four-point correlation function of the CMB temperature anisotropies and extract the angular power spectrum Fine-Structure Constant spatial variations projected along the line of sight at the last scattering surface. At tens of degree angular scales and above, we constrain the fractional rms fluctuations of the Fine-Structure Constant to be (δα/α)rms < 3.4 × 10–3 at the 68% confidence level. We find no evidence for a spatially varying α at a redshift of 103.

  • constraints on spatial variations in the fine structure Constant from planck
    arXiv: Cosmology and Nongalactic Astrophysics, 2013
    Co-Authors: Jon Obryan, Joseph Smidt, Francesco De Bernardis, Asantha Cooray
    Abstract:

    We use the Cosmic Microwave Background (CMB) anisotropy data from Planck to constrain the spatial fluctuations of the Fine-Structure Constant \alpha. Through Thompson scattering of CMB photons, spatial anisotropies of \alpha lead to higher-order correlations in the CMB anisotropies. We use a quadratic estimator based on the four-point correlation function of the CMB temperature anisotropy to extract the angular power spectrum of the spatial variation of the Fine-Structure Constant projected along the line of sight at the last scattering surface. At tens of degree angular scales and above, we constrain the rms fluctuations of the fine structure Constant to be \delta \alpha/\alpha_0= (1.34 +/- 5.82) x 10^-2 at the 95% confidence level with respect to the standard value \alpha_0. We find no evidence for a spatially varying \alpha at a redshift of 10^3.